Lubricating device.



W. A. CLARK. LUBRICATING DEV|CE. APPLICATION mm MAR. 6. 1914. RENEWED JULY 29.1915.

1,165,227. Patented Dec. 21, 1915.

Fig 9. 2. 53

@Oe A? 86 8 my a W Winesses: Inventor:

WA. Ulark invention is not limited in this respect.

"UITE hTATd WINTHROP A. CLARK, OF STAMFORD, CONNECTICUT.

LUBRIGATING DEVICE.

Specification of Letters Patent.

Patented Dec. 21, 1915.

Application filedMarch 6, 1914:, Serial No. 822,908. Renewed July 29, 1915. Serial No. 42,646.

T 0 all whom it may concern:

Be it known that I, lVInTHnoP A. CLARK, a citizen of the United States, residing at Stamford, in the county of F airfield and State of Connecticut, have invented certain new and useful Improvements in Lubricat ing Devices, of which the following is a specification.

This invention relates to lubricating-de vices, among the objects of the invention being the provision of an article of this character which is simple in construction, efiective and positive in action.

In the drawings accompanying and formingpart of the present specification I have shown in detail one of the several convenient forms of embodiment of the invention which to enable those skilled in the art to practice the same will be set forth fully in the following description. I do not restrict myself to this disclosure; I may depart therefrom in several respects within the scope of the invention defined by the claims following said description.

Referring to said drawings: Figure 1 is a vertical sectional view of a hydrocarbonengine equipped with a lubricating-device involving my invention. Fig. 2 is a horizontal section on the line 2-2 of Fig. 1. Fig. 3 is a cross section on the line 33 of Fig. 2.

Like characters refer to like parts throughout the several views,'which it will be observed are on'diiferent scales.

A lubricating device embodying my invention can be employed with advantage in many different connections, although it 1s of especial utility when incorporated in a hydrocarbon or other motor. In this particular field itmay be put to several different uses, although it is of prime advantage when used for lubricating the wrist-pin or its t on might be substituted therefor, the inbushing, the wrist pin being as is known, thepivot which connects the piston with the connecting rod or equivalent part in a motor of the kind set forth.

In Fig. l I have shown the cylinder 2 and the piston 3 of a hydrocarbon engine of the kind using kerosene or coal-oil as the propulsive agent, but as will be obvious Ttllnle e piston 3 is of the so-called trunk type. The piston and cylinder both being, therefore, old and not new with me, require no specific description. It is, of course understood that the interior of the piston has communication with the interior of the crank-case, and the reason for this will hereinafter appear. Inside the piston 3 are diametrically-opposite bosses 4: and 5, which receive the hollow wrist pin (5. Surrounding said wrist pin between the two bosses is the bushing 7 which is clamped in the upper end of the connecting rod 8 connected in the ordinary manner with the crank shaft (not shown). Extending through the top of the wrist-pin 6 are ports 9 and 10 which register with ports 11 and 12 respectively in the upper parts of the two bosses 4; and 5. Interiorly and exteriorly of the wrist pin 6 at that part surrounded by the bushing 7 are longitudinally-extending channels or grooves 13 and 14, the upper groove being connected with the lower groove by ports or perforations 15.

It will be clear that on the up stroke of the piston 3 a partial vacuum is created within the piston, by virtue of which oil or equivalent lubricant can be sucked into the wrist pin or analogous element to lubricate the same, that is to say owing to the partial vacuum within the piston, atmospheric pressure can force oil or equivalent substance into the wrist-pin. The means shown for accomplishing this result will be hereinafter described. It will be assumed that oil is to be drawn into the wrist-pin. In this event the oil enters the channel 14:, passes through the ports 15 into the lower channel 13 where it can lubricate the engaging surfaces of the l wrist-pin and bushing, the air that is associated with the oil being separated therefrom andv passing in the present case through registering ports 9 and 11 and 10 and 12 into the upper portion of the piston.

This is mer ly one of several ways of separating the air from the 011. Radically different means within the scope of the invenvention as will be inferred not being limited to any particular details in this respect.

The piston 3 is provided exteriorly with a longitudinally-extending channel 16 of such length as to be in communication at all times with the port or opening 17 in the cylinder 3. Leading from the channel 16 inwardly is a passage or port 18 from which the pipe 19 extends, said pipe having a downturned portion 20 located over the channel 14, to which I have already referred. Threaded or otherwise fitted into the outer portion of the port or passage 17 is the boss 22 of the valve casing 23 which has a practically Z-shaped which may as shown consist of a screw.

Opening into said passage in proximity to said screw 28, 1s a supply-p1pe 29 for the lubricant which may be under forced-feed or may be conducted toward the passage 24 by gravity. Fitted, by threading or otherwise into the valve casing 23 is a tube 30, the interior of which is connected by the port 31 with'the passage 24;, the tube 30 having a cap '32 and also as illustrated, having diametr1- cally opposite openings 33 to atmosphere.

It will be assumed that the piston 3 is moving upward, for example to compress the charge of gas in advance of it. This upward movement of the piston constitutes in the showing made, the oil-suction stroke of the piston. On such movement of the piston there will be created therein a vacuum so that the atmospheric air passing into the tube 30 by way of the two ports 33 can enter the channel 24 by way of the port 31, carry or force the oil with it, lift the valve 25 from its seat, pass, through the boss 22, port 17, channel 16, port 18 and pipe or tube 19 leaving the delivery end 20 of the latter intothe channel 14. The air mixed with the oil leaves the oil as soon as the two are discharged from the pipe 20 and ascending the wrist pin is discharged through the two pairs of registering ports 9 and 11 and 10 and 12 respectively into the upper part of the piston, so that the oil wholly free of air will pass through the two ports 15 into the channel 13 where it can lubricate the engaging portions of the wrist-pin 6 and bushing 7.

It will be noted that I provide a'positive, certain way of oiling a wrist-pin and its bushing and that the oil and air together are thrown into the wrist-pin where the air or some similar fluid is separated from the oil. It will be also perceived that the parts can be readily cleaned. I desire also further to note the important factthat the interior of thewrist-pin or equivalent is adapted for communication with the atmosphere, the valve 25. or one of a similar nature being provided to prevent the oil that is sucked into the wrist pin, being blown back into the valve casing or other container'23. There maybe cases where I might dispense with the valve.

It will be clear from the foregoing description taken in connection with the annexed drawingsthat I provide in combinal tion with a cylinder and a piston, duct ing a lubricant to the duct means, the piston being adapted to draw the lubricant into the cylinder by way of. said duct means, and

means whereby the. oil and the air can be separated from each other within the cylinder. Of course, other parts might be substituted for the cylinder and the piston provided the equivalent of the piston possessed the function of drawing in the oil in the manner noted, and there may as practically remarked, be cases where an agent other than the atmospheric air could be utilized for aiding the feed of the lubricant.

As a part of theinvention I also claim the method of lubricating an enginewhichcomprises the step of drawing the lubricant into i the interior of the cylinder by the suction of the piston and then in separating the a1r from the lubricant inside the cylinder or equivalents.

- It will be noted that there is an uninterrupted or unobstructed passage connecting the valve casing 23 with the interior of the piston 3 so as to facilitate cleaning, in that when said valve casing is dismounted the wrist pin can be cleaned without removing any of the other parts of the engine.

' What I claim is:

l. The combination of a cylinder anda piston within the cylinder, one of the parts of the cylinder, and'both having ports in constant communication with said channel, means for supplying lubricant into said having a channel extending longitudinally channel through the port in the cylinder, a hollow wrist pin mounted in the piston, and

means for conveying lubricant from the port in the piston, into said wrist pin, the'latter having an outlet for the lubricant.

2. The combination of a cylinder having a port, a piston reciprocatory in the cylin .der, having a longitudinally extendingcham.

nel in constant communication with said port, means for supplying lubricant by way of said port to said channel, and a hollow wrist pin in the cylinder, and means for conveying lubricant from said channel into the wrist pin, the latter having an outlet for said lubricant.

3. The combination 'of a cylinder, a piston in the cylinder, a hollow wrist pin connected with the piston, means for conducting lubricant into the wrist pin, the latterhaving zan outletfor the lubricant, said wrist pin and piston having registering portsforthe passage of air from the interior of the wrist pin into the interior of the piston, the interior of the piston being in communication with the interior of the cylinder.

at. The combination of a'cylinder, apiston in the cylinder, a hollow wrist pin connected with the piston, a'bushing surrounding the wrist pin, the wrist pin having communicating channels in its inner and outer surfaces, the outer channel being between the ends of said bushing. and means for delivering lu bricant into the inner channel.

5. The combination of a cylinder, a piston in the cylinder, the piston on its exterior having a longitudinally extending channel, a source of lubricant supply, passage means connecting said channel with the atmosphere and with the source of lubricant supply, a hollow wrist pin connected with the piston, a bushing surrounding the wrist pin, a port extending from the interior of the wrist pin to the space between the wrist pin and the bushing, means for conducting oil and air received from said channel into the lower portion ofthe wrist pin, the wrist pin ehav-V ing communication with the interior of the piston to provide tor the escape of air from the wrist pin into the piston.

6. The combination of a cylinder, a piston provided with a wrist pin, means for uninterruptedly conveying lubricant from a point outside the cylinder to the wrist pin while the piston is in motion and in the various'positions of said piston, the latter be- Gopies of this patent may be obtained for five cents each, by addressing the ing adapted to positively draw the lubricant along said conveying means by and during said motion, and means whereby the lubricant and air are separated from each other at the wrist pin.

7. The combination of a cylinder and a piston, means for uninterruptedly conveying lubricant from a point outside the cylinder into the same to lubricate a desired area, and in difierent positions of the piston, the latter being adapted to positively draw the lubricant along said conveying means by and on the motion thereof, and means whereby the air and lubricant are separated from each other approximately at the area which is being lubricated.

In testimony whereof I aifix my signature in presence of two witnesses.

WINTHROP A. CLARK.

Vitnesses H. S. MILLER, E. RICE.

Commissioner of Patents,

Washington, D. C. 

